![Siemens SIMATIC Panel PC 677 Operating Instructions Manual Download Page 56](http://html.mh-extra.com/html/siemens/simatic-panel-pc-677/simatic-panel-pc-677_operating-instructions-manual_378282056.webp)
Operating and parametrizing
7.3 Additional drivers and applications
SIMATIC PC Panel PC 677/877, Control Unit
7-18
Operating Instructions, Edition 04/2005, A5E00407724-01
7.3.11
USB keyboard controller driver and USB stack
Range of validity
The following applies to Windows 2000 and Windows XP:
Start
The USB keyboard controller is installed by default.
Functions
The following functions are provided by the USB keyboard controller:
•
Activation of the LEDs of the integrated function keys with SIMATIC ProTool and WinCC
flexible.
•
Alteration of the keyboard table with the applications "KeyTools" and "Keypad".
•
Adjustment of the backlighting brightness with the application "SetBrightness."